Features: Part of the Draper Storm Force 20V Power Interchange series, rear hand grip, auxiliary side handle, grinding guard, spindle lock button, locking flange. Batteries and chargers are available separately. Draper Storm Force® ; 20V interchangeable battery system allows you to combine one battery with any of the tools within the 20V Storm Force series (not compatible with Draper Storm Force® ; 10.8V). Battery: 20V Stormforce Li-ion, No Load Speed: 0-10,000rpm, Spindle thread: M14, Disc Diameter: 115mm, Bore: 7/8"/22.2mm, Weight: 1.7kg, Charger amperage: 2.4A, Charging time 2.0Ah: 60 minutes, Weight: 0.5kg, Battery amperage: 2.0Ah, Weight: 0.44kg